Recommendation for an Air Quality Standard for Sulphur Dioxide

27. The Panel recommend an Air Quality Standard for sulphur dioxide in the United Kingdom of 100 ppb, measured over a 15 minute averaging period.
28. This recommendation is intended to reduce the exposure of the population, including individuals who may be particularly susceptible, to levels of sulphur dioxide at which harmful effects are unlikely to occur. Although the exposure studies discussed earlier have primarily investigated the effect of sulphur dioxide on people suffering from asthma, it is likely that similar effects may be observed in patients with other chronic lung diseases. It is intended that techniques for monitoring the Standard be consistent with those of the Department of the Environment's national sulphur dioxide monitoring networks.